SB-200 Power Supply

[Glen Zook]

The new capacitors are probably closer to the desired
capacitance than the originals since they are probably
+/- 20% tolerance whereas the originals were -50% /
+80%.

I would definitely check the value of the series
resistor that is used to calibrate the voltage reading
on the meter.  These go bad all of the time.  You can
get a new one from Mouser ( http://www.mouser.com )
for very little cost.

Glen, K9STH


--- "James A. Sutherin" <jsutherin at FLOYDBROWNE.COM>
wrote:

I noticed when the input voltage was 120 the HV on the
panel meter only read about 1800volts. The power
supply cap's had been changed by the previous owner to
100uf / 450 vdc cap's. I realize the original cap's
were 125uf. 450vdc. Is there anything I should check
to see why I'm only getting 1800 vdc instead of the
2400 +/- vdc.? Would having the 100uf cap's instead of
the 125uf make that much difference? 









Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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